Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho tinh can snippets" » "cho sinh can snippets", "cho minh can snippets", "tho tinh can snippets", "cho tinh cao snippets", "cho tinh ca snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cho tinh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho tinh can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho tinh can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho tinh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.